Spin-Polarized Photoemission
Spin-Polarized Photoemission
复制标题
自旋偏振光电发射
DOI：
10.1007/3-540-33242-1_5
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
J. Osterwalder
中科院分区：
文献类型：
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作者：
J. Osterwalder
摘要概述了具有自旋分辨率的角分辨光谱学（ARPES）的原理，强调概念的清晰性，而不是完整性。在第2节中，讨论了光发射过程的理论成分，包括单颗粒基质元素以及光谱函数中反映的固体的多体反应。定义了三维布里渊区内探测确定电子态的实验参数。第3节和第4节列出了光发射信号中产生或减少自旋极化的几种情况和机制，并描述了如何测量它们。从铁磁Ni（111）表面和Au（111）的自旋轨道分裂表面态获得的自旋极化ARPES数据作为案例研究。最后，对该技术的发展前景进行了展望。
AbstractThe principles of angle-resolved photoemission spectroscopy (ARPES) with spin resolution are outlined, with the emphasis on conceptual clarity and not on completeness. In Sect. 2, the theoretical ingredients of the photoemission process are discussed, including the single-particle matrix element as well as the many-body reaction of the solid as reflected in the spectral function. Experimental parameters for probing defined electron states within a three-dimensional Brillouin zone are defined. Sections 3 and 4 list several situations and mechanisms where spin polarization is produced or reduced in photoemission signals, and describe how they can be measured. Spin-polarized ARPES data from a ferromagnetic Ni(111) surface and from the spin-orbit split surface state on Au(111) follow as case studies. Finally, the future prospects of the technique are assessed.